0000000000524915

AUTHOR

P. Becht

showing 2 related works from this author

First measurement of the |t|-dependence of coherent J/ψ photonuclear production

2021

The first measurement of the dependence on $|t|$, the square of the momentum transferred between the incoming and outgoing target nucleus, of coherent J/ψ photoproduction is presented. The data were measured with the ALICE detector in ultra-peripheral Pb-Pb collisions at a centre-of-mass energy per nucleon pair $\sqrt{s_{\rm NN}} = 5.02$ TeV with the J/$\psi$ produced in the central rapidity region $|y| < 0.8$, which corresponds to the small Bjorken-$x$ range $(0.3 − 1.4) \times 10 ^{−3}$. The measured $|t|$-dependence is not described by computations based only on the Pb nuclear form factor, while the photonuclear cross section is better reproduced by models including shadowing according t…

heavy ion: scatteringnucleon: pairVDP::Matematikk og Naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431nucl-ex01 natural sciencesSquare (algebra)ALICEJ/psi(3100): photoproduction[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Nuclear ExperimentQuantum chromodynamicsPhysicsPhysicsForm factor (quantum field theory)ultra-peripheral collisionsdependence [impact parameter]J/psi ALICE Pb-Pb collisionsBalitsky-Kovchegov equationQuarkoniumddc:3. Good healthPHOTOPRODUCTIONshadowingNucleonParticle Physics - ExperimentPB-PB COLLISIONSNuclear and High Energy PhysicsQC1-999nucleus: form factor[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]MomentumNuclear physicsPHYSICSCross section (physics)heavy-ion collisions ultra-peripheral collisions quarkoniaphotoproduction [J/psi(3100)]scattering [heavy ion]0103 physical sciencesNuclear Physics - Experimentddc:530Rapidity5020 GeV-cms/nucleonHeavy Ion experiments010306 general physicsimpact parameter: dependencehep-ex010308 nuclear & particles physicsnucleus: targetpair [nucleon]photonuclear productionheavy-ion collisionsquarkoniaform factor [nucleus]PB-PB COLLISIONS; PHOTOPRODUCTION; PHYSICStarget [nucleus]J/PsicoherenceJ/psi(3100): photoproduction ; impact parameter: dependence ; nucleus: form factor ; nucleus: target ; nucleon: pair ; heavy ion: scattering ; coherence ; Balitsky-Kovchegov equation ; shadowing ; rapidity ; ALICE ; experimental results ; 5020 GeV-cms/nucleonrapidityphotonuclear production J/Psi Pb-Pb collisionsHigh Energy Physics::Experimentexperimental results
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The upgrade of the ALICE TPC with GEMs and continuous readout

2020

Journal of Instrumentation 16(03), P03022 (2021). doi:10.1088/1748-0221/16/03/P03022

Physics - Instrumentation and DetectorsComputer sciencePhysics::Instrumentation and DetectorsFOS: Physical sciences61001 natural sciences114 Physical sciences030218 nuclear medicine & medical imaging03 medical and health sciences0302 clinical medicine0103 physical sciencesMicropattern gaseous detectors (MSGC GEM THGEM RETHGEM MHSP MICROPIC MICROMEGAS InGrid etc)Electronicsddc:610Detectors and Experimental TechniquesInstrumentationphysics.ins-detMathematical PhysicsCMOS readout of gaseous detectorsLarge Hadron Collider010308 nuclear & particles physicsbusiness.industryDetectorTime projection Chambers (TPC)Readout electronicsInstrumentation and Detectors (physics.ins-det)ChipUpgradeGaseous imaging and tracking detectorsGas electron multiplierALICE (propellant)businessComputer hardware
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